There were a few tutorials out there but I found Elizabeth Hartman's the best. This is a great mini-project to start with if you are new to quilting. The many layers get a bit heavy though.
A few years ago Kevin gave me a pair of his old jeans and said keep them. I did and figured I'd never have a use for them. Was I wrong! A good stuffing for potholders is (2) layers of 100% cotton bating like Warm & White and a layer of denim or canvas. I had some thick wool on hand from an old project for Kevin so I also used that as an insulator in place of the three layers mentioned above.
These have a little pocket for your hand and look great on both sides. Fun, fun, fun!!